r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 673
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r4f2456
Manufacturer Part Number
r4f2456
Description
16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R4F2456.pdf
(1376 pages)
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• Mode 7 (EXPE = 0)
BRLE
BREQOE
BREQOS
CS4E
PG4DDR
Pin function
Notes: 1. Not supported in the H8S/2456 Group and H8S/2456R Group.
• PG3/CS3/RAS3/CAS *
Note:
Operating
mode
EXPE
CS3E
RMTS2
to
RMTS0
PG3DDR
Pin
function
The pin function is switched as shown below according to the combination of the operating
mode, bits RMTS2 to RMTS0 in DRAMCR of the bus controller, bit CS3E in PFCR0, and bit
PG3DDR.
2. Supported only in the 145-pin package.
3. TCK input when BSCANE pin = 1 in the 145-pin package.
*
input
PG3
0
Not supported in the H8S/2456 Group and H8S/2454 Group.
0
output
PG3
1
Area 3 is in
normal space
input
PG3
0
PG4 input
output
1, 2, 4
CS3
1
0
Area 3
DRAM
output
space
RAS3
is in
1
synchronous
Areas 2 to 5
DRAM *
output
CAS *
space
are in
0
input
PG3
0
TCK input*
PG4 output
0
output
PG3
1
1
input
PG3
Rev. 1.00 Sep. 19, 2008 Page 643 of 1342
0
3
0
output
PG3
1
Area 3 is in
normal space
input
PG3
0
7
output
CS3
1
1
CS4 output*
Section 10 I/O Ports
REJ09B0467-0100
Area 3
DRAM
output
space
RAS3
1
is in
1
synchronous
Areas 2 to 5
1
DRAM *
output
CAS *
space
are in
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